Answer:
A. the jar covers
Explanation:
An independent variable is what you, as the scientist, changes.
The wistle is coming from all the chemicals including the fire you use to light the firework and a chemcial reaction is occuring which is the sound that is made because of this
Answer:
16 is the mass number. 8 is the atomic number.
Answer:
false evaporation is change of state
boiling point is temperaturw of liquid
